Please don't send these patches to me. You know what I think of the whole project. NeilBrown On Wed, Sep 13 2017, Stefan Hajnoczi wrote: > v3: > * Documented vsock syntax in exports.man, nfs.man, and nfsd.man > * Added clientaddr autodetection in mount.nfs(8) > * Replaced #ifdefs with a single vsock.h header file > * Tested nfsd serving both IPv4 and vsock at the same time > > Status: > > * The last revision was somewhat controversial because it's already possible > to share files between a hypervisor and virtual machine using TCP/IP, so why > add AF_VSOCK support to the stack? TCP/IP based solutions require the > virtual machine administrator to be involved in the configuration and are > therefore not suitable for automatic management by OpenStack, oVirt, etc. > Maintainers, is this feature acceptable? > > * Need advice on netid: is there agreement to use "tcpv" instead of "vsock" as > Chuck Lever suggested and how to ask IESG to assign it? > > The AF_VSOCK address family allows virtual machines to communicate with the > hypervisor using a zero-configuration transport. KVM, VMware, and Hyper-V > hypervisors support AF_VSOCK and it was first introduced in Linux 3.9. > > This patch series adds AF_VSOCK support to mount.nfs(8) and rpc.nfsd(8). To > mount an export from the hypervisor (CID 2): > > # mount.nfs 2:/srv/vm01 /mnt -o proto=vsock > > To serve exports over vsock port 2049: > > # nfsd ... --vsock 2049 > > This series extends exports(5) syntax to handle vsock:<CID> or vsock:*. For > example, the guest with CID 3 can be given access using vsock:3. > > nfsd can export over IPv4/IPv6 and vsock at the same time. See the changes to > exports.man, nfs.man, and nfsd.man in the patches for syntax details. > > NFSv4 and later are supported. > > The code is also available here: > https://github.com/stefanha/nfs-utils/tree/vsock-nfsd > > The latest kernel patches are available here: > https://github.com/stefanha/linux/tree/vsock-nfsd > > Stefan Hajnoczi (14): > mount: don't use IPPROTO_UDP for address resolution > nfs-utils: add vsock.h > nfs-utils: add AF_VSOCK support to sockaddr.h > mount: present AF_VSOCK addresses > mount: accept AF_VSOCK in nfs_verify_family() > mount: generate AF_VSOCK clientaddr > getport: recognize "vsock" netid > mount: AF_VSOCK address parsing > exportfs: introduce host_freeaddrinfo() > exportfs: add AF_VSOCK address parsing and printing > exportfs: add AF_VSOCK support to set_addrlist() > exportfs: add support for "vsock:" exports(5) syntax > nfsd: add --vsock (-v) option to nfsd > tests: add "vsock:" exports(5) test case > > tests/Makefile.am | 3 +- > support/include/exportfs.h | 4 ++ > support/include/sockaddr.h | 18 +++++ > support/include/vsock.h | 59 +++++++++++++++++ > utils/nfsd/nfssvc.h | 1 + > support/export/client.c | 8 +-- > support/export/hostname.c | 161 +++++++++++++++++++++++++++++++++++++++++++-- > support/nfs/getport.c | 16 +++-- > utils/exportfs/exportfs.c | 42 ++++++++++-- > utils/mount/network.c | 37 ++++++++++- > utils/mount/stropts.c | 61 ++++++++++++++--- > utils/mountd/auth.c | 2 +- > utils/mountd/cache.c | 10 +-- > utils/mountd/mountd.c | 4 +- > utils/mountd/rmtab.c | 2 +- > utils/nfsd/nfsd.c | 18 ++++- > utils/nfsd/nfssvc.c | 62 +++++++++++++++++ > configure.ac | 3 + > tests/t0002-vsock-basic.sh | 53 +++++++++++++++ > utils/exportfs/exports.man | 12 +++- > utils/mount/nfs.man | 20 ++++-- > utils/nfsd/nfsd.man | 4 ++ > 22 files changed, 552 insertions(+), 48 deletions(-) > create mode 100644 support/include/vsock.h > create mode 100755 tests/t0002-vsock-basic.sh > > -- > 2.13.5
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